Question

. The line lx + my +n=0 intersects the curve
ax? + 2hxy + by? = 1 at the points P and Q. If circle on PQ
as diameter passes through the origin, then
(a) + (a + b) = 1 + m2
(b)(a + b) =n2 + m2
(c) m²(a + b) = 1 +n?
(d) none of these​

Answer 1

Answer:

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